These marker lines may not be yellow, either. In fact, you may find markings of this nature in a multitude of different colors, but they all serve the same purpose.

Per city code, the color of the markers are very specific, so one can tell who has been doing work in their area: (A) Verizon -Cherry red marker. (B) Empire City Subway-Chrome yellow marker.

These marker lines may not be yellow, either. In fact, you may find markings of this nature in a multitude of different colors, but they all serve the same purpose.